Maybe someone had water on them? After all, we have waterskins.

[ Embarking further into a cave is usually towards the end of the list of things Hilda wants to do, especially if there were some questionable black smears on the walls. She hadn't even wanted to embark into the Abyss and that was nothing resembling a cave.

Then again, this was a very different situation from back then.

She regards the smears unable to stop the feeling but comes up beside Petra to cast more light on the wall. Squinting she can sort of make out some kind of symbol like Petra had said but... ]

Does that look like a sign to you? Maybe like a rune? Or one of our Arcane symbols?